摘要
为了深入研究综采工作面顶板的"三带"情况,根据杜儿坪矿现存不同煤层的顶板岩性,通过覆岩移动与破坏规律按煤层角度、冒落带与导水裂隙带最大高度的经验公式,用不同方法进行顶板"三带"计算,得出该矿各可采煤层顶板"三带"理论计算结果,从理论上确定"三带"的高度范围。对回采工作面专用回风巷内布置顶板穿层钻孔的布孔方式设计、抽采裂隙带卸压瓦斯以及合理布置高抽巷具有重要的理论指导作用。
In order to further study ＂three zones＂ of the roof in fully mechanized coal mining face,according to the existing roof lithology of different coal in Du＇erping coal mine,through the overlying rock movement and failure law,according to the coal seam angle,caving zone and fractured zone by the empirical formula for calculating the maximum height,after different methods of roof＂ three zone＂ calculation,obtains the mine mineable coal seam roof＂ three zone＂ theory calculation results,from theoretically determined ＂three band＂ height range.Arranged borehole pattern design for the mining face special return air roadway the roof crossing layer drilling,drainage and pressure relief gas in fractured zone and reasonably arrange the highly-located drainage roadway,it has an important guiding role of theory.
出处
《山西焦煤科技》
2011年第12期40-42,共3页
Shanxi Coking Coal Science & Technology
关键词
杜儿坪矿
煤层顶底板
三带
研究
Du＇erping mine
Coal seam roof and floor
Three zones
Research
